baber/WOPTO huggingface dataset:
Patent GB-2281637-A (GB)
Title: Calibration of sensitometers
Inventor: GREEN ANDREW
IPC: G03C5/02
Filed: 1993-09-01
Abstract: Sensitometers are used for monitoring photographic and radiographic processes, and then making it possible to control these processes. However, although it is relatively straightforward to obtain control strips for individual sensitometers, it is often difficult to compare the results of control strips which have been exposed using different sensitometers. A method for calibrating sensitometers comprises exposing a first control strip to a step wedge in the first sensitometer, and a second control strip to a step wedge in the second sensitometer, the first and second control strips being formed on the same photographic material. The material is then processed and the characteristics of the material is determined using the known exposures given to the material by the second sensitometer and the density values obtained corresponding to those exposures. Once these characteristics are known, it is then possible to calculate the exposure given at each step on the first control strip using the following equation:- E = Ei/( alpha {[Ds/(D-Dbase)]        <- alpha >} -  alpha )<- beta > where  E is the exposure,        D is the density at exposure E, Ei is the exposure at the point of inflexion of the        curve, Ds is the density at saturation, and         alpha  and  beta  are characteristics relating to the        photographic material.
Patent GB-2281582-A (GB)
Title: A domestic waste water recovery system
Inventor: HERNON JOHN PETER
IPC: E03B1/04
Filed: 1993-09-02
Abstract: A domestic waste water recovery system utilizes a porous membrane filter to supply clarified water for domestic sanitation and general purpose use. The clarified water is contained in a suitable storage tank at or below ground level and clean water returned to a dwelling via a header tank at roof level to provide gravity feed to sanitation devices.
Patent GB-2271677-A (GB)
Title: Electrical connection system
Inventor: WHITE ROWLAND SPENCER
IPC: H01R31/06
Filed: 1992-07-06
Abstract: An electrical connection system, for example a drop-side patch panel, comprises a mounting rail (12) which receives first connectors (14) arranged with their contacts facing away from the rail (12). Cable introduced between the rail and the connectors is separated into individual conductors which are terminated at contacts (34, 36) via slots (30) in the rail walls. A second connector (16) carries standard data or voice sockets communications (19) which are connected to the first connector via edge contact carrying PCBs (38) which engage in slots (40) in the first connectors. The PCB edge connectors have a discontinuity on one surface, and one half of the contact is connected to the contact on the other side to enable direct connection between upper (34) and lower (36) rows of contacts of the first connectors in a first position of the second connectors, and contact between the upper rows of contacts and the standard sockets (19) in a second position. <IMAGE>
Patent GB-2284871-A (GB)
Title: Hydraulic braking systems
Inventor: NIGHTINGALE MATTHEW JOHN
IPC: B60T8/48
Filed: 1993-12-14
Abstract: A vehicle hydraulic braking system includes a solenoid-operated valve (10) in the line (11) connecting the master cylinder (1) to a pressure transmitter (14) for pressurising a slave cylinder (16, 18) of the brake (20) of a wheel of the vehicle. When the solenoid of the valve (10) is energised upon starting the engine or by the driver closing a switch (C), the valve isolates the master cylinder (1) from the pressure transmitter. A pressure sensor (27) transmits a braking demand signal, representing the pressure generated in the master cylinder by the driver, to a computer (31) which controls a valve (23) determining braking pressure applied to the pressure transmitter from a source P of pressurised fluid which may be different from that in the master cylinder. <IMAGE>
Patent GB-2277989-A (GB)
Title: Detector circuit for discriminating random events such as flame flicker
Inventor: KING JOHN DEE
IPC: G08B17/02
Filed: 1994-05-10
Abstract: A circuit for detecting randomly occurring signals, particularly signals representative of a fire condition, has a radiation detector 5, a peak detector circuit 12 for identifying the peak values in the detector output, a peak spacing circuit 17 for determining the duration between adjacent peaks and a collection buffer 20 for accumulating values representative of successive peak spacings. The stored values are the logarithms 19 of the peak spacings, and pairs of values are subtracted (41 - 45, Fig. 18) to evaluate in each case the ratio of two spacings to be compared and to detect inequality. A first group of comparisons (ones) is between consecutive stored values (1 - 2, 2 - 3, ...), a second group (twos) is between every second stored value (1 - 3, 2 - 4, 3 - 5, ...) and so on. In each group the series of ratios calculated is summed (46 - 50) and each sum is then filtered (81 - 85) and thresholded (91 - 95) before application to an AND gate (100) which provides an alarm if the ratio sums of all the groups exceed the thresholds. <IMAGE>
Patent GB-2279400-A (GB)
Title: Door locking device with an antitheft mechanism
Inventor: INOUE JIRO
IPC: E05B77/28
Filed: 1994-06-23
Abstract: A door locking device with an antitheft mechanism comprises a main lock lever (12) linked to a key cylinder (15) and movable from an unlock position (A) to an antitheft position (C) via a lock position (B), a sub lock lever (13) linked to an inside lock button (21) of the door and movable to an unlock position and to a lock position, and linkage means having sufficient elasticity to connect the lock levers (12, 13) with each other between the lock position and the unlock position. As the main lock lever (12) is moved from to the antitheft position (C) the linkage member is elastically deformed and permits the sub lock lever (13) to be left at the lock position, and cannot act on the main lock lever. A projection (42) connected to the main lever (12) engages in a slot in a member 43 linked to the sub lever (13). A resilient detent (46) is overcome by the projection (42) in the anti-theft position (fig 11) to allow relative movement of the levers. <IMAGE>
Patent GB-2283169-A (GB)
Title: Bedding and related materials
Inventor: HENSON DAWNA
IPC: A47G9/10
Filed: 1994-08-17
Abstract: An item of bedding, for example, a mattress, overlay, futon, quilt, pillow, cushion, chair liner or mat, comprises an outer envelope formed of a material, such as cotton, which is pervious to air and, within the envelope, one or more layers of woven wool. The woven wool comprises wool slivers or 'rough top' (12) which forms the weft of the weave while the warp comprises strings or tapes (11). <IMAGE>
Patent GB-2294510-A (GB)
Title: An electromagnetic bearing
Inventor: WHORLOW RAYMOND JOHN
IPC: F16C39/06
Filed: 1994-09-28
Abstract: An electromagnetic radial bearing for suspending a rotor 21 with respect to a stator 17 comprises a core 29 defining a pair of poles 31, coils 35 mounted on the core which, when energised, produce magnetic flux which passes from one pole to the other, and magnetically permeable means comprising a plurality of laminations 41 arranged annularly around the rotor, each lamination extending substantially parallel to the axis of the rotor. As a result of this arrangement, when the rotor expands due to centrifugal forces, cracking of the magnetically permeable means does not occur. There may be four individual cores 29 arranged at 90 DEG  about the stator 17 such that each pair of poles 31 are spaced axially relative to the rotor. The assembly may form part of an energy storage and conversion apparatus. <IMAGE>
Patent GB-2284537-A (GB)
Title: A diaper
Inventor: DURANT BENEDICTE
IPC: A61F13/49
Filed: 1994-11-22
Abstract: The diaper has a front part 12, a back part 14 and an intermediate crotch part 13 which includes an absorbent body (1, Fig. 4) joined to a fluid-impermeable bottom sheet (7). The diaper also has a fluid-permeable top sheet 9 which lies proximal to the wearer's body in use and which includes an opening 15 situated in the back and crotch parts 14, 13 and which is unattached to the absorbent body at least within the region of the opening 15. Two elastic devices 20, 21 in the top sheet 9 extend divergently in relation to one another, from the front edge 16 of the opening 15 in the crotch part 13 towards the back part 14 and on respective sides of the opening in the top sheet 9. <IMAGE>
Patent GB-2285318-A (GB)
Title: Electrically driven zoom lens camera
Inventor: NOMURA HIROSHI
IPC: G02B7/10
Filed: 1993-04-15
Abstract: An electrically driven zoom lens camera comprises a zoom lens barrel (ZB) having a rotatable driving member provided with a peripheral gear so that a zooming operation is carried out by the rotation of the rotatable driving member. A camera body (CB) has a cylindrical portion 43 in which the zoom lens barrel is accommodated, said cylindrical portion having an opening formed thereon in which a drive pinion (48) is provided to engage with a rotatable driving member of the zoom lens barrel. A light intercepting plate (50) supports said drive pinion and is arranged on the outside of said cylindrical portion in a manner which prevents harmful light from reaching said aperture. The plate 50 extends along the profile of the cylindrical portion 43 and covers the front end of the space 44 accommodating the drive pinion 48. <IMAGE>
Patent GB-2298923-A (GB)
Title: Sensing the condition of a sample of food
Inventor: GREEN IAN MACDONALD
IPC: G01R25/00
Filed: 1995-03-11
Abstract: A method of sensing the condition of a sample of food comprises applying a sinusoidal a.c. current or voltage to the sample at a frequency of between 100kHz and 1MHz and measuring the phase angle of the impedance of the sample at this frequency. The phase angle is measured by coupling the impedance of the sample and that of a reference impedance alternately to one input of a phase comparator the other input of which is coupled to the a.c. current or voltage source. Conditions such as whether the food has been frozen then thawed or is fresh can be sensed using the method. A device is described which uses the method, needs no calibration, and is accurate to two tenths of a degree.
Patent GB-2294126-A (GB)
Title: Optical transmission and solid state laser devices using graded index optical fibre
Inventor: KUBA KAZUKI
IPC: B23K26/064
Filed: 1995-10-11
Abstract: An optical transmission device 100 has a graded index optical fiber 9 having a core of diameter oc, refractive index n0 at a center of the core, and a difference  DELTA n between refractive indexes of the center of the core and a peripheral section of the core; and an optical fiber incident system having a smallest focused point at or near an incident side plane of said optical fiber 9 through which a laser beam is introduced, the diameter oin of the laser beam 70 at said incident said plane of said optical fiber having a following relationship: 0.5os </= oin </= 1.5os, and os =(oco0 theta (2n0 DELTA n><- 1 DIVIDED 2)1 DIVIDED 2> , where a diameter and an opening angle of the laser beam waist are o0 and 2 theta . Focussing lens 8 holder 101 and optic fibre holder 102 are shown, one or both of which may be movable. Beam splitter (15, Fig. 10) and laser beam monitor (15, Fig. 10), which calculates the diameter of the laser beam and its position, control lens holder (104, Fig. 10) movement. <IMAGE>
Patent GB-2303697-A (GB)
Title: Gas fired radiant tube heater
Inventor: MAY MICHAEL JOHN
IPC: F23C3/00
Filed: 1995-10-26
Abstract: A gas-fired radiant tube heater system comprises one or more pre-mix gas burners 21, a radiant carrier tube 7 and fan means for inducing a flow of carrier air into and along the carrier tube, wherein the or each gas burner is located in a burner tube 37, an end of each burner tube being connected to the carrier tube so that the hot combustion products from the burner(s) are drawn from the burner tube(s) into and along the carrier tube by the flow of carrier air. The system promotes an even heat distribution at any overall heat output, which can be varied by altering the carrier air flow rate and/or the gas mixture supplied to the burner(s).
Patent GB-2295159-A (GB)
Title: Magnetic recording medium
Inventor: SATOH TAKESHI
IPC: G11B5/73
Filed: 1995-11-21
Abstract: A magnetic recording medium such as a magnetic disc having a low friction coefficient and excellent durability comprises a substrate 1, an uneven layer 2a on the substrate and a metallic magnetic layer 4 on the uneven layer. The uneven layer comprises an alloy of Al and a first metal capable of forming a carbide eg Si, Cr. The substrate may be carbon. There may be a layer 3 comprising Cr disposed between the uneven layer and the metallic magnetic layer. In addition there may be a metallic layer, eg Ti, disposed between the uneven layer and the substrate. <IMAGE>
Patent GB-2298467-A (GB)
Title: A latch, e.g. for latching tubing to a packer in a wellbore
Inventor: KOHLI HARJIT
IPC: E21B31/20
Filed: 1996-02-23
Abstract: The latch 12 is adapted to be connected to a tubing string and will snap into a packer disposed in a wellbore. The latch 12 has an annular base with a plurality of axially extending fingers 12a separated, respectively, by a plurality of gaps, that snap into the packer, each finger having external threads 14 disposed around its periphery, each thread including an engaging surface and a disengaging surface, an angle between the surface of each disengaging thread relative to a direction being in a range from 20 to 28 degrees. An elastomeric barrier 28b occupies each gap between adjacent ones of the fingers 12a. A distance exists between each of the fingers 12a and an adjacent snap latch body, the fingers being adapted to bend and disengage across the distance, the distance being 2-1/2 to 3 times a particular distance that is required for the fingers to snap out of the packer in the wellbore when an operator pulls upwardly on the tubing. The geometry of the finger 12a is selected to minimize a lever arm extending between an axially applied force applied axially to the external threads 14 and a center of gravity of the finger at the base, the lever arm being approximately equal to zero. An outer diameter of each finger of the latch is greater than an inner diameter of an inner mandrel of the packer plus a tolerance stackup. The number of external threads 14 on the periphery of each finger 12a is minimized in order to further minimize the number of disengaging loads created when the latch is pulled out of the packer by the operator at the wellbore surface. This will assist in establishing as a certainty the pulling force which is required in order to pull the tubing and the snap latch out of the packer in the wellbore and the pushing force required to snap the tubing and the snap latch into the packer in the wellbore.
Patent GB-2313677-A (GB)
Title: Cathode ray tube display manufacturing system
Inventor: BALL MARTIN HUW
IPC: H01J9/42
Filed: 1996-06-01
Abstract: In a system for manufacturing displays containing cathode ray tubes 10, test data 120, 150 relating to the electrical and electron beam landing characteristics of a particular CRT are stored in a machine readable recording eg a bar code 170 associated with that CRT. The data is then accessed and used in selecting other components (240, fig 3) to be used in the display or in tuning 220 the drive circuitry 20 of the display incorporating the particular CRT. The measured electrical and electron beam landing characteristics can either be carried on the bar code itself or the bar code may merely identify the particular CRT and the measured characteristics may be accessed from a separate memory. Display assembly time is reduced by utilising data obtained when testing the particular CRT.
Patent GB-2304538-A (GB)
Title: Headgear with visor movable from a position in front of the face to within the headgear.
Inventor: ROVIRA JOHN STEVEN
IPC: A42B3/22
Filed: 1996-08-08
Abstract: The visor, 14 is of a flexible material that may be coloured and may be removably attachable to the cap 10 by a fabric hinge 20 to the headband so that it is foldable between first position, in front of the face, and a second position, within the head space of the cap. A material layer, in the form of a flap fixed to the interior of the cap lies between the head of a wearer and the visor when the visor is within the cap to prevent soiling of the visor. In an alternative embodiment there are guide rails within the headgear so that the visor can be slid between the first and second positions. The headgear may also be of hard material and the visor attached by clips or press studs.
Patent GB-2305375-A (GB)
Title: A Washing Plant
Inventor: KEENAN KEVIN MICHAEL
IPC: B07B1/46
Filed: 1996-09-23
Abstract: A washing plant 3 for use with a material screening apparatus has a chassis (20, Fig 2) carrying two screen decks 27, the first (lower) having an inlet path (21, Fig 2) for accepting aggregate material into a first washing area 11, wherein sand and fines are washed from the aggregate. The outlet path 13 from 11 feeds material to recirculating conveyors 5 and 7. From the top of conveyor 7 washed material enters another inlet path (24, Fig 2) for delivery to a second washing area 15. The second screen deck is disposed over the first screen deck so that the sand and fines washed from the second (upper) screen deck are rinsed through to the lower screen deck and out of the washing stations. The sand is collected and the water recycled. Each washing area 11, 15 of the first and second screen decks 27 has a plurality of washing stations (30, Fig 2) comprising water jets, and an air jet (39, Fig 2) is provided at the first inlet path (21, Fig 2) to separate the raw aggregate material. The outlet path 16 of the second screen deck feeds washed aggregate material to a conveyor 9, and thence to further grading means G.
Patent GB-2305863-A (GB)
Title: Unitary foam absorbent article
Inventor: GUSTAFSON LARS
IPC: A61F13/72
Filed: 1996-09-30
Abstract: An absorbent structure in an absorbent article 41, such as a diaper, sanitary napkin or incontinence pad or the like, consists entirely of a foamed material and has a liquid permeable upper side 43, liquid impermeable rear side 44 and an absorbent layer 42 therebetween. The upper side is made liquid permeable by perforating it during manufacture, whilst the lower side is formed with a skin. The upper layer may optionally be covered with a separate topsheet. A superabsorbent may be incorporated into the absorbent layer. In the form of a sanitary napkin or incontinence protector the article is bowl shaped having a raised rearward side and a shorter front side. Alternatively, it may be a bowl shaped diaper particularly formed to conform with the pelvic and groin regions.
Patent GB-2306242-A (GB)
Title: Traffic control sign
Inventor: CHAPLIN IVAN
IPC: G09F13/04
Filed: 1996-10-09
Abstract: A traffic control sign is described which is capable of displaying an image of an arrow symbol to indicate to other road users the direction in which they should pass. The sign, which is adapted to be mounted on a vehicle, comprises first and second arrays of discrete light sources (6 Figure 1) which are arranged to display a respective arrow symbol (7) and (8) and, optionally, a circular ring (9). Each array of discrete light sources comprises the free ends of each of a plurality (21, 22 and 23, 24) of optical fibres (17), the other respective ends of which are located adjacent to a respective lamp unit (20 L , 20 R ). Switching means (25) are provided for switching one or other of the lamp units (20 L , 20 R ) to an illuminated condition. The sign may also include an optical fibre running from each lamp unit to the cab of the vehicle to indicate which unit is operative. Means may be incorporated in the sign so that in operation, the sign flashes. A detector of ambient light levels may be included in the sign so that the brightness of the displayed images may be adjusted in response to measured ambient light levels.
Patent GB-2307294-A (GB)
Title: Burner nozzle for oil wells
Inventor: FLAMANT PATRICK
IPC: F23D11/10
Filed: 1996-11-13
Abstract: A burner for oil-well tests comprises a plurality of nozzles, each nozzle comprising means (20, 21) for injecting an air-oil mixture to be burnt in the direction of a combustion zone, the flow of air at the outlet of the nozzle allowing the air in the air-oil mixture to create an air induction effect, that is to say entrainment of air, which is sufficient along the whole length of the jet to ensure the combustion.
Patent GB-2305356-A (GB)
Title: Lid with integrally moulded pouring spout
Inventor: LOVELL PETER J
IPC: B65D47/06
Filed: 1996-06-05
Abstract: A pail lid (1) having a retractable pouring spout (3). The pail lid has a neck (4) integrally formed as part of said lid and extending from the face (2) of the lid opposed to a peripheral groove. The neck has external threads (10) thereon adapted to receive a screw cap (9), and a retractable pouring spout located within said opening (16) that is movable from a pouring position to a retracted position while being retained within said neck. The spout mating with the neck at each of the pouring position and the retracted position, to retain the spout in said positions. An injection moulding process for manufacture of the lid is also disclosed.
Patent GB-2316467-A (GB)
Title: A pedal assembly e.g.for a clutch or brake
Inventor: TSUGAWA KAZUYA
IPC: B60K23/02
Filed: 1997-04-15
Abstract: A pedal assembly, e.g.for a clutch or brake, comprises a pedal 5 rotatably supported on a pedal bracket 3 by shaft 4, and a pedal stopper 9 provided on the bracket. A pedal stopper stay 7, which is made by bending a flat plate, is attached to a pedal arm by welding. A return stopper face 7a and stroke stopper face 7b formed on the pedal stopper stay engage respective faces 9a, 9b on the pedal stopper. In a further embodiment, the pedal has integral return stopper and stroke stopper faces 11a, 11b.
Patent GB-2316060-A (GB)
Title: Vapour recovery system
Inventor: ANDERSSON BO-GORAN
IPC: B67D7/04
Filed: 1997-05-22
Abstract: In a system and method for recovering a gasoline vapor/air mixture from a vehicle tank during the dispensing of gasoline from a storage tank (18) into the vehicle tank the flow of the mixture from the vehicle tank to the storage tank is induced during the dispensing of the gasoline. The amount of oxygen in the mixture is sensed and the flow of the mixture is shut off when the oxygen content in the mixture attains a predetermined value.
Patent GB-2313800-A (GB)
Title: Simultaneous turning
Inventor: OYA KOICHI
IPC: B23B3/32
Filed: 1997-06-02
Abstract: A method is provided for turning a first work W and a second work W held on a first spindle 1 and a second spindle 2, respectively. The first spindle and the second spindle are positioned on the same axis and confronting each other, so that the first work and the second work are rotated about the same axis. A tool rest 13 is provided with a first tool 14 and a second tool 15 and is moved for turning the first work by the first tool. The second spindle is moved in synchronism with the movement of the tool rest for turning the second work by the second tool.